Question

разложи на множители 0,25x2 – 0,16 = (0,3x + 5)2 = 0,49x2 – 0,16y2 =​

Answer 1

$\displaystyle\bf\\1)\\\\0,25x^{2} -0,16=(0,5x)^{2} -0,4^{2} =(0,5x-0,4)(0,5x+0,4)\\\\\\2)\\\\(0,3x+5)^{2} =(0,3x+5)(0,3x+5)\\\\\\3)\\\\0,49x^{2}-0,16y^{2} =(0,7x)^{2}-(0,4y)^{2} =(0,7x-0,4y)(0,7x+0,4y)$